felspar

柯林斯词典

feldspar /ˈfɛldˌspɑː, ˈfɛlˌspɑː/ (also felspar)

• 1. N any of a group of hard rock-forming minerals consisting of aluminium silicates of potassium, sodium, calcium, or barium: the principal constituents of igneous rocks. The group includes orthoclase, microcline, and the plagioclase minerals 长石

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